Read "Getting Real" http://gettingreal.37signals.com/ http://gettingreal.37signals.com/ Yes sound the alarm. Your heading towards a a million dollar failure.

Read "Getting Real" http://gettingreal.37signals.com/ http://gettingreal.37signals.com/ Yes sound the alarm. Your heading towards a a million dollar failure. Instead define a bare minimum feature set for 1 user role, build a mvp with that minimal feature set and get it into the hands of users then start adding more